1 files changed, 120 insertions, 0 deletions
diff --git a/tests/qemu-iotests/023 b/tests/qemu-iotests/023
new file mode 100755
index 000000000..4f31b5658
--- /dev/null
+++ b/tests/qemu-iotests/023
@@ -0,0 +1,120 @@
+#!/bin/bash
+#
+# qcow2 pattern test with various cluster sizes
+#
+# Copyright (C) 2009 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=kwolf@redhat.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+
+_cleanup()
+{
+	_cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+. ./common.pattern
+
+# much of this could be generic for any format supporting compression.
+_supported_fmt qcow qcow2
+_supported_proto generic
+_supported_os Linux
+
+TEST_OFFSETS="0 4294967296"
+TEST_OPS="writev read write readv"
+
+# Can't use 512 byte clusters, the tests use cluster halves
+CLUSTER_SIZES="1024 4096 16384 65536"
+
+for CLUSTER_SIZE in $CLUSTER_SIZES; do
+
+    echo "Creating new image; cluster size: $CLUSTER_SIZE"
+    echo
+
+    _make_test_img 8G
+
+    echo "Testing empty image"
+    echo
+
+    for offset in $TEST_OFFSETS; do
+        echo "At offset $offset:"
+        for op in $TEST_OPS; do
+            io_test $op $offset $CLUSTER_SIZE 3
+        done
+        _check_test_img
+    done
+
+    echo "Compressing image"
+    echo
+
+    mv $TEST_IMG $TEST_IMG.orig
+    $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -c $TEST_IMG.orig $TEST_IMG
+
+    echo "Testing compressed image"
+    echo
+
+    for offset in $TEST_OFFSETS; do
+        echo "With offset $offset:"
+        for op in read readv; do
+            io_test $op $offset $CLUSTER_SIZE 3
+        done
+        _check_test_img
+    done
+
+    echo "Testing compressed image with odd offsets"
+    echo
+    for offset in $TEST_OFFSETS; do
+        # Some odd offset (1 sector), so tests will write to areas occupied partly
+        # by old (compressed) data and empty clusters
+        offset=$((offset + 512))
+        echo "With offset $offset:"
+        for op in $TEST_OPS; do
+            io_test $op $offset $CLUSTER_SIZE 3
+        done
+        _check_test_img
+    done
+
+    echo "Creating another new image"
+    echo
+
+    _make_test_img 8G
+
+    echo "More complex patterns"
+    echo
+
+    for offset in $TEST_OFFSETS; do
+        echo test2: With offset $offset
+        io_test2 $offset $CLUSTER_SIZE 4
+        _check_test_img
+    done
+
+done
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0